The team travels to New Zealand to examine one of the biggest yet most mysterious animals on Earth -- the giant squid. Delving into its three hearts, razor sharp beak, tooth-covered tentacles and bizarre reproductive system, the team explores the anatomy of a deep-sea alien that's never been observed in the wild.

Doc Gruber is a shark biologist and founder of the American Elasmobranch Society. Doc Gruber is a recognized authority on shark science. He has specialized in shark behavior, anatomy, sensory systems and tracking. Gruber is perhaps best known for his studies on habitat selection and homing behavior of lemon sharks and eagle rays around the Bimini Shark Lab.

FRONTLINE reveals the anatomy of campaign finances on steroids, taking us to the newest battleground in the Supreme Court's Citizens United ruling: the state of Montana. Airing October 30, "Big Sky, Big Money" explores the increasingly dysfunctional campaign finance system caught between the conflicting needs to protect political speech and prevent corrupting influence.